Hanna Instruments 755 – Marine Alkalinity Colorimeter – Checker® HC

Hanna Instruments HI755 – Marine Alkalinity Colorimeter – Checker® HC 🌊📏

Take the guesswork out of measuring alkalinity in your saltwater aquarium with the Hanna Instruments HI755 Marine Alkalinity Checker® HC. This compact, handheld colorimeter gives you fast, accurate dKH readings—without needing to interpret confusing color charts. Designed specifically for marine environments, it's perfect for reef hobbyists who value precision and simplicity. 🧪🐟

📊 Accurate Alkalinity Monitoring

The HI755 measures marine alkalinity in degrees of carbonate hardness (dKH) with a range of 0.0 to 20.0 dKH. Whether you're fine-tuning dosing schedules or keeping your corals happy, this Checker® HC gives you dependable, digital results you can trust.

🖐️ Simple One-Button Operation

Just zero the meter with your blank sample, add reagent, and insert the reacted sample. One press of the button and your alkalinity level is digitally displayed—quick, clean, and consistent.

🌐 Compatible with HI755-26 Reagents

For ongoing testing, pair this colorimeter with our HI755-26 reagent refills, which provide 25 accurate, pre-measured tests per box (sold separately).

🔑 Key Features

• Designed for marine and reef aquariums
• Measures alkalinity from 0.0 to 20.0 dKH
• Resolution of 0.1 dKH and accuracy of ±0.3 dKH
• EPA-compliant colorimetric method using EDTA chemistry
• Easy-to-read digital LCD screen
• Single-button operation and auto shut-off

📦 What’s Included

• HI755 Checker® HC Colorimeter
• Sample cuvettes with caps (2)
• Starter reagent packets (6 tests – HI755-26)
• AAA battery
• Instruction manual

Coral health starts with stability. Use the Hanna HI755 Marine Alkalinity Checker® HC to confidently manage one of the reef’s most critical parameters. 🧼🌺

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